And pow! There it is.
I put on the twin Paul Ginos and R&M mounts last night, and mounted E3 and Edelux below my front rack. I looped the excess wiring from each under the fork crown, around the fender mounting bracket to keep things clean. Just enough was left to head down to the hub with a little slack for removing the spades from the hub.
I stripped the old spades from the E3 leads, twisted a pair of wires together from both the E3 and the Edelux, and crimped new spades on. A quick test revealed that the lighting was operational, so I popped the spades off the hub and went to work with some shrink tubing and my heat gun.
This morning I was using both lights coming down the 2 mile descent from my neighbourhood, and the difference was amazing. The focused beam of the Edelux is so much longer than the throw of the E3, and the E3 fills the "dark" spot between the Edelux beam and the wheel as well as giving a flood fill to the sides.